added nullstream.js to mock /dev/null on windows

bin/vows

@@ -5,6 +5,7 @@ var path   = require('path'),
     fs     = require('fs'),
     util   = require('util'),
     wildcard   = require('../lib/utils/wildcard').wildcard,
+    NullStream   = require('../lib/utils/nullstream').NullStream,
     events = require('events');
 
 //
@@ -191,7 +192,7 @@ if (options.supressStdout) {
     var devNullStream = null;
 
     if(process.platform === 'win32'){
-        devNullStream = fs.createWriteStream('.nul');
+        devNullStream = new NullStream();
     } else {
         devNullStream = fs.createWriteStream('/dev/null');
     }

lib/utils/nullstream.js

@@ -0,0 +1,30 @@
+/*
+ * nullstream.js: A simple stream to have a writestream accept all data written to  it
+ * Used on windows to replace writing to /dev/null
+ *
+ * (C) 2012 MSOpenTech Inc.
+ *
+ */
+var Stream = require('stream').Stream;
+
+var NullStream = function () {
+  Stream.call(this);
+  this.writable = true;
+};
+
+exports.NullStream = NullStream;
+
+// Inherit from base stream class.
+require('util').inherits(NullStream, Stream);
+
+// Extract args to `write` and emit as `data` event.
+NullStream.prototype.write = function (data) {
+  console.log('************' + data);
+  return true;
+};
+
+
+// Extract args to `end` and emit as `end` event.
+NullStream.prototype.end = function () {
+  this.emit('end');
+};